'Failing' food system leaves millions of children malnourished or overweight

Unicef report finds poorest children at greatest risk, while price of healthy food in rich nations drives food poverty

At least one in three children under five are either undernourished or overweight, and one in two lack essential vitamins and nutrients, the UN children's agency has warned.

The Unicef report laid bare the alarming rate at which poor diets and a "failing" food system are damaging children, saying that "millions are eating too little of what they need and millions are eating too much of what they don't need: poor diets are now the main risk factor for the global burden of disease".